Instructions / Assembly
Table Of Contents

39
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1. Connect the blue connector marked "FLUSH" for unit needing to be flushed
.
(The water heater is isolated from Quick Connect Multi system when the blue connector
marked "FLUSH" for flushing is connected. Do not need to disconnect the Quick Connect Cord.)
2.
Then the code “CCC” or “FCC” is displayed on the Remote Controller.
3. Turn on the circulating pump to circulate the flushing solution through the water heaters
for 1 hour at a rate of 1.5 gallons per minute or more.
4. When 1 hour passes, the code
“C00” is flashing on the Remote Controller.
Do not disconnect the blue connector marked "FLUSH" for flushing.
5. Turn off the circulation pump.
6. Rinse and clean the flushing solution out of the water heaters in accordance with
“Procedure 3”.
(See the “Procedure 3.1-3.5”.)
7. Disconnect the blue connector marked "FLUSH" for flushing.
The Code
“C00” goes out on the Remote Controller.
8. Close the Front Covers.
9. Open the gas supply valves and water outlet valves.
10. Check for correct operation of the water heaters.
is displayed when the Main Water Heater's blue connector is connected.
is displayed when the Sub Water Heater's blue connector is connected.
CCC
FCC
CCC
FCC
Detects the flow
C60 C59
Detects the flow
C60 C59
(Ex. : The display when the both water heaters are flushed at the same time.)
The remaining time of flushing gives indication priority to the connector which is connected later.
Main Water Heater's
Blue Connector
CCC C50
Sub Water Heater's
Blue Connector
Detects the flow
FCC C60
Detects the flow
Flashing
1 hour passes
10 minutes pass
Water
Drain Valve
NOTE : Place a bucket under the water heater to
drain water from the “Water Drain Valve”.
Carefully unscrew the “Water Drain Valve”
to rinse flushing solution out of the water
heater for about 10 seconds.
Then close the "Water Drain Valve".
Main Water HeaterSub Water Heater
Circuit Board
Flashing
C00
. . .
Flashing
C00
. . .
Connect
Connect
C00
Quick Connect Cord
Do not need to disconnect.
Remote Controller
FLUSH
Connect
Please contact Noritz America if more information is needed for flushing.
(Phone # : 866-766-7489)